I'm pretty out of shape. Not overweight, if anything could do with gaining a bit, but pretty unfit. Feel like I have no strength whatsoever. Went for an easy walk back in December and my right hip and thigh have been painful since. Went to physio but really struggled with some of the exercises and having to go on a rehab programme which starts next week. In the process of trying to do the physio exercises I noticed my right knee was also painful when bending and weight bearing. Then my right shoulder seized up painfully the day after doing a session of the exercises. My knee still hurts on bending and feels quite unstable so I'm using a knee support periodically. My shoulder is better than it was but still stiff and achey. I've already got arthritis in both my big toes so these additional joint issues are concerning. I really want to get fit but everything I do results in injury of some sort. Anyone have any ideas as to why this might be and what I can do to prevent it happening again?